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doc/user: add 90-degree scroll behavior

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Matt Mayfield 2018-08-07 09:34:28 -05:00
parent f78d6669e5
commit 358a22fc68
1 changed files with 4 additions and 0 deletions
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doc/user/scrolling.rst
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@ -59,6 +59,10 @@ movements will translate into tiny scroll movements.
Scrolling in both directions at once is possible by meeting the required
distance thresholds to enable each direction separately.
When a scroll gesture remains close to perfectly straight, it will be held to
exact 90-degree angles; but if the gesture moves diagonally, it is free to
scroll in any direction.
Two-finger scrolling requires the touchpad to track both touch points with
reasonable precision. Unfortunately, some so-called "semi-mt" touchpads can
only track the bounding box of the two fingers rather than the actual